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Fencer Intel
medium 5.0

CVE-2011-1137 json

Integer overflow in the mod_sftp (aka SFTP) module in ProFTPD 1.3.3d and earlier allows remote attackers to cause a denial of service (memo…

published 2011-03-11 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1151

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
28.1%
EPSS 28.1% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

Integer overflow in the mod_sftp (aka SFTP) module in ProFTPD 1.3.3d and earlier allows remote attackers to cause a denial of service (memory consumption leading to OOM kill) via a malformed SSH message.

Patch / fix

  • proftpd-dfsg Debian 14, Debian 13, Debian 12 1.3.3d-4

debian advisories DEBIAN-CVE-2011-1137

  • proftpd openSUSE Tumbleweed 1.3.5b-2.5

opensuse advisories openSUSE-SU-2024:10048-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-1137 updated cvss 5.0

proftpd: integer overflow in mod_sftp

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-16129)
  2. Published

Exploit prediction

28.07% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-16129 ProFTPd - 'mod_sftp' Integer Overflow Denial of Service (PoC) dos, 2011-02-07
  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=681718 referenced PoC, tagged "exploit" by a source, unverified
  • securityfocus.com http://www.securityfocus.com/bid/46183 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.